In many construction jobs deep excavations must be made before the structure can be built.

Excavation support systems are temporary earth retaining structures that allow the sides of excavation to be cut vertical or near vertical. This is done to maximize the size of an excavation; when the price of real estate is high or space is limited by property lines, utilities or existing structures. When excavations have the potential to endanger lives or adjacent properties, bracing to support the soil must be designed. The Occupational Safety and Health Act (OSHA) requires that all trenches exceeding 5 feet in depth be shored.

So that CTC is specialized in the field of shoring and nailing works in different methods such as executing shotcrete, anchor bolts and other methods according to the soil assessment and to the soil test, reports and recommendations.